Hadrian’s Wall, the Great Wall of China, the Berlin Wall, the US-Mexico Border Fence. Sometimes, the only way to keep undesirables in an adjacent geographical (and ideological) space from sneaking in to your own is by building a big-ass barrier.
Learning this valuable home security lesson from history, Saudi Arabia has unveiled a 900km state-of-the art fence along its border with Iraq to ensure that the war waged by Islamic State extremists doesn’t spill across its frontier.
The $3.4 billion Northern Border Security Project was built by Munich-based Airbus Defence and Space. Watchtowers, radars, night-vision cameras, face-recognition software, underground movement sensors, razor wire, armoured recon vehicles – it’s all good.
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Engineering & Technology magazine 